graphitized petroleum coke

Pubdate: 07-30 2021

What is graphitized petroleum coke? What are the functions of graphitized petroleum coke?

Graphitized petroleum coke is a product obtained by distilling crude oil, separating light oil and heavy oil, and then thermally cracking the heavy oil. According to its quality, graphitized petroleum coke can be used in graphite manufacturing, smelting and chemical industries.

From the appearance, coke is black lumps or granules with irregular shapes and different sizes, with metallic luster. Coke particles have a porous structure, and the main element is carbon.

Graphitized petroleum coke has its unique physical, chemical and mechanical properties. It is non-volatile carbon, volatile matter and mineral impurities with heating components, namely sulfur, metal compounds, water, ash and other substances, which determine the chemical properties of coke. The graphitized petroleum coke has a wide range of functions. Low-sulfur high-quality cooked coke, such as needle coke, is mainly used to manufacture ultra-high power graphite electrodes and some special carbon products. In the steelmaking industry, needle coke is also an important raw material for the development of new electric furnace steelmaking technology.

Generally speaking, aluminum smelting widely uses medium sulphur and ordinary cooked coke, while chemical production uses high sulphur and ordinary green coke, such as calcium carbide and silicon carbide. Of course, they are also used as fuel for metal casting.

Most of the coke produced in China is low-sulfur coke, which is mainly used for aluminum smelting and graphite production. In addition, it is mainly used to manufacture carbon products, and provide steelmaking, non-ferrous metals and aluminum smelting; prepare silicon carbide products, such as various grinding wheels, sandpaper; prepare commercial calcium carbide, used to manufacture synthetic fibers, acetylene and other products; also can be used as Fuel, but when used as a fuel, it needs to be micronized with a staged impact mill, and can be burned after making coke powder with JZC-1250 equipment. Coke powder is mainly used as fuel for glass plants and coal water slurry plants.

graphitized petroleum coke

Is the graphitized petroleum coke dangerous?

Petroleum is very stable and is mainly exposed to the human body through inhalation and skin contact. Studies have shown that graphitized petroleum coke is very stable and is basically regarded as an inert substance. The graphitized petroleum coke will not evaporate into the atmosphere, nor will it chemically react with water. The graphitized petroleum coke causes contact with the human body mainly through inhalation and skin contact. Most toxicity analysis shows that the potential harm of graphitized petroleum coke to human health is low. The irreversible effects of respiratory function and lung mass increase were found only in repeated dose and chronic inhalation toxicity tests, but the main reason was the inhalation of high concentrations of particulate matter, not the pathological changes caused by the chemical components in graphitized petroleum coke. Toxicology studies have not found carcinogenicity, reproductive abnormalities and abnormal reproductive functions.

Graphitized petroleum coke production companies, namely oil refineries, downstream production companies, namely carbon plants, and even terminal electrolytic aluminum and steel companies have been greatly affected by air pollution prevention and control plans in recent years. We all have the responsibility to protect the environment.

graphitized petroleum coke

What is the price of graphitized petroleum coke per ton?

Graphitized petroleum coke price October 26, 2020

graphitized petroleum coke

What are the types of graphitized petroleum coke?

(1) According to the coking method, it can be divided into delayed coke, kettle coke, fluidized coke and flat coke. At present, delayed coking is produced in large quantities at home and abroad, and only a small amount of still coke is produced.

(2) According to the heat treatment temperature, it can be divided into green coke and calcined coke. Green coke is prepared by delayed coking (500), contains a lot of volatile matter, and has low mechanical strength. Calcined coke is obtained by calcining green coke (about 135). Most oil refineries in China only produce coke, and most of the calcination operations are carried out in carbon plants.

(3) According to the sulfur content of coke, it can be divided into three types: high-sulfur coke, medium-sulfur coke and low-sulfur coke.

(4) According to the appearance, structure and properties of graphitized petroleum coke, it is divided into sponge coke, honeycomb coke and needle coke. Sponge coke is similar to sponge in appearance, contains a lot of impurities, contains a lot of small pores, and there is a thin coke wall between the pores, so it is not suitable for the production of carbon materials. The distribution of small pores in the honeycomb coke is relatively uniform, the honeycomb structure is obvious, and the physical and mechanical properties are good. This graphitized petroleum coke can be used as a raw material for the production of ordinary power graphite electrodes, pre-baked anodes and electric carbon products.

Needle coke has obvious stripes on the outer surface, and the pores inside the coke block are arranged in elongated elliptical shapes. After crushing, they become elongated particles, which can be used as raw materials for the production of high-power and super-power graphite electrodes.

The difference between graphitized petroleum coke and coal:

Graphitized petroleum coke contains less than 1% ash, about 80% fixed carbon, 10-20% volatile matter and less than 7% sulfur.

The quality of coal varies greatly, with ash content as high as 30%, and the rest is fixed carbon, volatile matter and sulfur.

What is the role of graphitized petroleum coke, as well as the introduction of the price, variety, and the difference between graphitized petroleum coke and coal, etc. I hope it will be helpful to everyone. So about graphitized petroleum coke, do you have a clear definition now? A new round of locust plague recommendations in Africa Let’s show it to everyone.


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